[charts] All services should be configured using a config file instead of ENVs

[pahatz]

This also solves the problem with using multiple encryption keys for ingest and verify, since we can then specify the yaml key-value config options.

In the updated version of ingest and verify they expect a list of key/value pairs for the encryption key files and and passphrases.

Acceptance Criteria:

• Each service is configured using config-files.
• There's one config-file per service (no shared config files).
• Ingest and verify take the new key/value options for the encryption keys so we can have multiple.

[jbygdell]

This will require a rather big refactoring of the entire chart, all components.

[aaperis]

unassigning since @jbygdell already started working on it before